It’s hard to say how Aspartame will affect you. After drinking the “NEW Diet Coke” many years ago I began to feel strange. I had tremors at times and began to feel weak when I hadn’t eaten recently. I was diagnosed with Hypoglycemia (low blood sugar) and placed on a special diet. A year later I still had similar problems but they had worsened (if I didn’t eat something every 2 hours I was a mess). I went to an endocrinologist to confirm my diagnosis, he concurred. 8 years later I went on a real diet finally giving up Diet Coke and Aspartame. Within a week and a half ALL my symptoms disappeared. I haven’t had anything containing Aspartame since, nor have I had those symptoms return. I drink Coke Classic now. My advice, avoid Aspartame aka NutraSweet.
PS A symptom of low blood sugar can be mood swings which I also had occasionally back then.